如何获取android手机联系人并按字母展示(一）

安卓如何读取联系人不加read_contacts和write_contacts，会有以下的报错

12-10 11:14:42.971 1079-1107/? W/ActivityManager: Permission Denial: opening provider com.android.providers.contacts.ContactsProvider2 from ProcessRecord{b2377c8 14473:com.pic.optimize/u0a212} (pid=14473, uid=10212) requires android.permission.READ_CONTACTS or android.permission.WRITE_CONTACTS

我们打算做一个下面的界面:

xml文件是:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:rcm="http://schemas.android.com/apk/res/com.ringcentral.android"
    android:id="@+id/contact_list_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/bgColorMain"
    android:orientation="vertical" >

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <ListView
            android:id="@android:id/list"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:cacheColorHint="@android:color/transparent"
            android:divider="@null"
            android:listSelector="@drawable/bg_list_item_selector" />

        <com.example.view.SectionIndexerView
            android:id="@+id/section_indexer_view"
            android:layout_width="70dip"
            android:layout_height="fill_parent"
            android:layout_gravity="right"
            android:layout_marginBottom="4dip"
            android:layout_marginRight="6dip"
            android:layout_marginTop="4dip"
            android:textSize="12.0sp" />

        <TextView
            android:id="@+id/section_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/section_text_bg"
            android:gravity="center"
            android:textColor="#FFFFFF"
            android:textSize="40sp"
            android:visibility="gone" />
    </FrameLayout>

    <RelativeLayout
        android:id="@+id/no_contact_indication"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <TextView
            android:id="@+id/emptyListText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:singleLine="true"
            android:text="No Contacts"
            android:textColor="@color/text_no_items"
            android:textSize="20sp" />

        <ProgressBar
            android:id="@+id/loading"
            style="@style/RCMProgressBar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:visibility="gone" />
    </RelativeLayout>

</LinearLayout>

android提供了本地数据库的查询uri,可以查询出数据:

采用一个AsyncQueryHandler来进行查询, AsyncQueryHandler自己开启了线程来进行数据查询，很方便

protected final void queryPersonal() {
   mQueryHandler.startQuery(QUERY_TOKEN, null, ContactsContract.Contacts.CONTENT_URI, 
         Personal.CONTACTS_SUMMARY_PROJECTION, null, null, getSortOrder(ContactsContract.Contacts.DISPLAY_NAME));
}

protected static String getSortOrder(String fieldName) {

   return "CASE WHEN substr(UPPER(" + fieldName + "), 1, 1) BETWEEN 'A' AND 'Z' THEN 1 else 10 END," +
         fieldName + " COLLATE LOCALIZED ASC";
}

protected final class MyHandler extends AsyncQueryHandler {
   /**
    * Asynchronous query handler constructor.
    */
   public MyHandler(Context context) {
      super(context.getContentResolver());
   }
   
   /**
    * On query completion.
    */
   @Override
   protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
      if (cursor == null || cursor.isClosed()) {
         return;
      }
      if (!isFinishing()) {
         setLoading(false);
         if (mAdapter != null) {
            mAdapter.setLoading(false);
            mAdapter.changeCursor(cursor);
         } 
         
         if (cursor.getCount() == 0) {
            mEmtytext.setVisibility(View.VISIBLE);
         } else {
            mEmtytext.setVisibility(View.INVISIBLE);
         }
      } else {
         if (cursor != null && !cursor.isClosed()) {
            cursor.close();
         }
      }
   }
}

List的adapter采用ResourceCursorAdapter

public void bindView(View view, Context context, Cursor cursor) {
   final SectionedContactListItemCache cache = (SectionedContactListItemCache) view.getTag();
   cache.typeView.setVisibility(View.GONE);
   cache.photoView.setVisibility(View.VISIBLE);
   String name = cursor.getString(Personal.NAME_COLUMN_INDEX);
   if (TextUtils.isEmpty(name)) {
      cache.nameView.setText(R.string.contact_no_name);
   } else {
      cache.nameView.setText(name);
   }
   if(mSectionMapper != null  && mSectionMapper.isSection(cursor.getPosition())) {
      cache.sectionHeader.setVisibility(View.VISIBLE);
      cache.sectionHeader.setText(mSectionMapper.getSection(cursor.getPosition()));
      // Set section header unclickable
      cache.sectionHeader.setOnClickListener(null);
   }else{
      cache.sectionHeader.setVisibility(View.GONE);
   }
   setContactPhoto(cursor, cache.photoView, Personal.PHOTO_COLUMN_INDEX);
}


@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
   
   View view = super.newView(context, cursor, parent);
   final SectionedContactListItemCache cache = new SectionedContactListItemCache();
          cache.nameTypeWrapper = view.findViewById(R.id.name_type);
   cache.sectionHeader = (TextView) view.findViewById(R.id.txtSectionHeader);
   cache.nameView = (TextView) view.findViewById(R.id.name);
   cache.typeView = (TextView) view.findViewById(R.id.type);
   cache.photoView = (ImageView) view.findViewById(R.id.photo);
   cache.detailItemIcon = (ImageView) view.findViewById(R.id.contacts_detail_item_icon);
   view.setTag(cache);
   
   return view;
}

Item的layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <TextView
        android:id="@+id/txtSectionHeader"
        android:layout_width="match_parent"
        android:layout_height="@dimen/list_item_section_height"
        android:background="@drawable/bg_contacts_section_header"
        android:gravity="center_vertical|left"
        android:paddingLeft="@dimen/default_padding_to_side"
        android:textColor="@color/contacts_text_separator_text_color"
        android:textSize="@dimen/font_size_medium" />

    <RelativeLayout
        android:id="@+id/contact_item"
        android:layout_width="match_parent"
        android:layout_height="@dimen/general_list_view_item_height">

        <ImageView
            android:id="@+id/photo"
            android:layout_width="@dimen/favorites_item_picture_width"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:layout_alignWithParentIfMissing="true"
            android:paddingTop="6dp"
            android:paddingBottom="6dp"
            android:layout_marginLeft="@dimen/contact_photo_margin_left_right"
            android:scaleType="fitCenter"
            />

        <!-- this icon may be added in next version, and now it would be hidden -->

        <ImageView
            android:id="@+id/contacts_detail_item_icon"
            android:layout_width="50dip"
            android:layout_height="60dip"
            android:layout_alignParentRight="true"
            android:layout_marginRight="0dip"
            android:cropToPadding="true"
            android:duplicateParentState="false"
            android:paddingBottom="3dip"
            android:paddingTop="3dip"
            android:scaleType="fitCenter"
            android:class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="@drawable/ic_list_link"
            android:visibility="gone" />

        <RelativeLayout
            android:id="@+id/name_type"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignWithParentIfMissing="true"
            android:layout_toLeftOf="@id/contacts_detail_item_icon"
            android:layout_marginLeft="@dimen/contact_photo_margin_left_right"
            android:layout_toRightOf="@id/photo"
            android:background="@drawable/bg_list_item_divider">

            <TextView
                android:id="@+id/type"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBaseline="@+id/name"
                android:layout_alignParentRight="true"
                android:layout_marginRight="@dimen/contact_type_margin_left_right"
                android:ellipsize="marquee"
                android:gravity="center_vertical|right"
                android:singleLine="true"
                android:textColor="@color/refresh_control_text_color"
                android:textSize="@dimen/font_size_small" />

            <TextView
                android:id="@+id/name"
                android:layout_width="200dp"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginRight="@dimen/contact_name_margin_left_right"
                android:layout_toLeftOf="@id/type"
                android:ellipsize="marquee"
                android:gravity="center_vertical|left"
                android:singleLine="true"
                android:textColor="@color/text_color_main"
                android:textSize="@dimen/font_size_medium" />
        </RelativeLayout>
    </RelativeLayout>

</LinearLayout>

代码在https://github.com/nickgao1986/StepSport